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-rw-r--r--include/control.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/control.h b/include/control.h
index e386ecec..d0c40d2f 100644
--- a/include/control.h
+++ b/include/control.h
@@ -356,6 +356,9 @@ typedef enum _snd_ctl_type {
/** Read only (flag for open mode) \hideinitializer */
#define SND_CTL_READONLY 0x0004
+/** Return EINTR instead blocking (flag for open mode) \hideinitializer */
+#define SND_CTL_EINTR 0x0080
+
/** CTL handle */
typedef struct _snd_ctl snd_ctl_t;